What You Actually Need to Switch to Semi-Hydro (A Beginner's Shopping List)

If you've been reading about semi-hydro and LECA and feel ready to give it a go, the next question is usually the practical one: what do you actually need to buy? Here's a genuinely honest answer, covering what's essential, what's genuinely useful, and what you can happily skip when you're just starting out.

The Essentials

A pot with a reservoir. This is the one non-negotiable. Semi-hydro relies on a water reservoir at the base of the pot that wicks moisture up to the roots as needed — a standard drainage pot won't do this job. Look for one with a clear viewing window if you can, since being able to see the water level and root growth at a glance takes a lot of the guesswork out of the first few months.

LECA or PON. This is your growing medium, replacing soil entirely. LECA (lightweight expanded clay aggregate) is the more common starting point — inert, reusable, and easy to rinse clean between uses. PON is a specific blended substrate some growers prefer for certain plants, but LECA is the more straightforward choice if you're just starting out.

Clean scissors or secateurs. For trimming away any rotted or damaged roots when you first repot — worth having a dedicated, clean pair rather than reaching for whatever's nearest.

Genuinely Useful, Not Essential

A semi-hydro specific fertiliser. You can start with plain water for the first little while, but plants in an inert medium like LECA will eventually need feeding, since there's no soil providing background nutrients the way there would be in a traditional pot. A fertiliser formulated for hydroponic or semi-hydro use, used at a diluted strength, is worth having ready before your plant needs it rather than scrambling once you notice slower growth or pale leaves.

A trellis, if you're converting a climbing plant. Not essential for every plant, but if you're switching over a Monstera, Philodendron, or similar climber, giving it something to climb at the same time as the substrate switch means one less thing to sort out later.

What You Can Skip, At Least at First

• A huge collection of different growing media — start with one bag of LECA and get comfortable before experimenting with PON or blends
• Specialist pH or EC meters — genuinely useful once you're a few months in and want to fine-tune things, but not something a beginner needs on day one
• A different pot for every plant size you might ever own — start with the size that suits the plant in front of you; you can always add more later

Common Mistakes to Avoid

Using dry LECA straight from the bag. Always rinse and soak LECA before use — dry LECA dropped straight into a pot can actually pull moisture away from your plant's roots in the short term, which is the opposite of what you want.

Feeding at full strength immediately. Many experienced semi-hydro growers, ourselves included, feed at well below the bottle's recommended strength — often around a third — to encourage steady, sustainable growth rather than forcing a sudden growth spurt.

Expecting an instant transformation. A short adjustment period after switching is completely normal — a little yellowing or drooping in the first couple of weeks usually means the plant is adapting, not that something's gone wrong.

Forgetting to check the reservoir, not just the surface. LECA always looks dry on the surface, even when there's plenty of water in the reservoir below. Get into the habit of checking the water level directly, not just eyeballing the top.

Making It Easy: Our Starter Kit

If you'd rather not source everything separately, we've put together a Semi-Hydro Starter Kit with exactly what's covered above: a self-watering pot (choose Moria for larger, established plants, or Maxia for medium and younger ones), a cedar trellis, LECA clay balls, a small set of plant tools, and a mini fertiliser sample to get you started. It's genuinely everything from this list in one box, so you can go from "thinking about it" to "repotted" in one order.

The Bottom Line

Switching to semi-hydro doesn't require a huge shopping list — a proper pot, some LECA, and a bit of patience will get you most of the way there. Everything else is a genuine improvement, but not a barrier to getting started.

Ready to make the switch? Browse our Semi-Hydro Starter Kit, or explore our full range of semi-hydroponic plant pots, handmade in Cornwall.